Not without an existing community to build off of you won't. You'll fail miserably. The people in the Area51 proposals are generally meeting there for the first time — they didn't know each other already.
MetaOptimize is building on top of an existing well-targeted community like MathOverflow did. Really, just like you did originally with your and Jeff's blog communities. AskMetafilter is successful because it was an outlet for an existing community — it wasn't attempt to start a new one.
Area51 is scavenging small clumps of people that happen to overlap with your existing main sites. That your sites are so QA-focused makes it very difficult for an actual community to grow within it — there's no outlet for chat and friend-making, for fucks sake even your moderation site is the same QA format! At least you've integrated it a bit more so that Meta isn't a completely separate community with it's own account system…
MetaOptimize is building on top of an existing well-targeted community like MathOverflow did. Really, just like you did originally with your and Jeff's blog communities. AskMetafilter is successful because it was an outlet for an existing community — it wasn't attempt to start a new one.
Area51 is scavenging small clumps of people that happen to overlap with your existing main sites. That your sites are so QA-focused makes it very difficult for an actual community to grow within it — there's no outlet for chat and friend-making, for fucks sake even your moderation site is the same QA format! At least you've integrated it a bit more so that Meta isn't a completely separate community with it's own account system…